ARMY TM 9-1290-365-24&P 1.23 1553 TERMINATION. For the following description, refer to Figure 1-11. When the M93 MVS is not installed, a special termination is installed on the AFCS line, thus simulating a match line impedance. Figure 1-11. 1553 Termination, P/N 12979006 1-25/(1-26 blank)